Home / 15,275.46-21,078.36-8,903.37

Finding the Fourth Proportional to 15,275.46, 21,078.36 and 8,903.37

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Solution

The fourth proportional to 15,275.46, 21,078.36 and 8,903.37 is: 12,285.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,275.46 : 21,078.36 = 8,903.37 : x
  2. Step 2: Convert to fraction form
    15,275.46/21,078.36 = 8,903.37/x
  3. Step 3: Cross multiply
    15,275.46x = 21,078.36 × 8,903.37
  4. Step 4: Simplify right side
    15,275.46x = 187,668,438.07
  5. Step 5: Solve for x
    x = 187,668,438.07/15,275.46
  6. Step 6: Final answer
    x = 12,285.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.